Plenty of Jews were concerned about the specter of Zohran Mamdani becoming mayor of New York. But few did as much to mobilize other Jews around the issue as Jonathan Schulman.Via his newly formed organization, The Jewish Majority, Schulman circulated a letter to rabbis and cantors around the country opposing “rising anti-Zionism and its political normalization throughout our nation.” The letter, which called out Mamdani by name, was signed by more than 1,100 Jewish congregational leaders - one